Abstract
In order to produce the hear-resistant inner layer of hot-forging die, the plasma spraying and plasma re-melting and plasma spray welding were adopted. Substrate material was W6Mo5Cr4V2, including 10%, 20%, 30% tungsten carbide (WC) ceramic powder used as coating material to obtain different Nickel-based WC alloys coating. Micro-structure and micro-hardness analysis of the coating layer are conducted, as well as thermophysical properties for the coating layer were measured. The experimental results show that the coating prepared with 70%Ni60, 30%WC powder has the best properties with plasma spray welding, in which the micro-hardness can achieve 900HV, meanwhile it can improve the thermal property of hot-forging die dramatically.
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Funded by the National Natural Science Foundation of China (No.50675165) and the National Key Technology R&D Program (No.2006BAF02A29)
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Wang, J., Wang, H., Wang, H. et al. Preparation of Ni60-WC coating by plasma spraying, plasma re-melting and plasma spray welding on surface of hot forging die. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 27, 640–643 (2012). https://doi.org/10.1007/s11595-012-0519-y
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DOI: https://doi.org/10.1007/s11595-012-0519-y